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[flang] Add runtimes using --dependent-lib on MSVC targets (llvm#72519)
This patch uses the added --dependent-lib support to add the relevant runtimes on MSVC targets as `/DEFAULTLIB:` sections in the object file rather than on the link line. This should help CMake support for flang on Windows. Fixes llvm#63741 Fixes llvm#68017
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15 files changed

+112
-86
lines changed

15 files changed

+112
-86
lines changed

‎clang/lib/Driver/ToolChains/CommonArgs.cpp‎

Lines changed: 4 additions & 40 deletions
Original file line numberDiff line numberDiff line change
@@ -977,47 +977,11 @@ bool tools::addOpenMPRuntime(ArgStringList &CmdArgs, const ToolChain &TC,
977977
return true;
978978
}
979979

980-
void tools::addFortranRuntimeLibs(const ToolChain &TC, const ArgList &Args,
980+
void tools::addFortranRuntimeLibs(const ToolChain &TC,
981981
llvm::opt::ArgStringList &CmdArgs) {
982-
if (TC.getTriple().isKnownWindowsMSVCEnvironment()) {
983-
CmdArgs.push_back(Args.MakeArgString(
984-
"/DEFAULTLIB:" + TC.getCompilerRTBasename(Args, "builtins")));
985-
unsigned RTOptionID = options::OPT__SLASH_MT;
986-
if (auto *rtl = Args.getLastArg(options::OPT_fms_runtime_lib_EQ)) {
987-
RTOptionID = llvm::StringSwitch<unsigned>(rtl->getValue())
988-
.Case("static", options::OPT__SLASH_MT)
989-
.Case("static_dbg", options::OPT__SLASH_MTd)
990-
.Case("dll", options::OPT__SLASH_MD)
991-
.Case("dll_dbg", options::OPT__SLASH_MDd)
992-
.Default(options::OPT__SLASH_MT);
993-
}
994-
switch (RTOptionID) {
995-
case options::OPT__SLASH_MT:
996-
CmdArgs.push_back("/DEFAULTLIB:libcmt");
997-
CmdArgs.push_back("Fortran_main.static.lib");
998-
CmdArgs.push_back("FortranRuntime.static.lib");
999-
CmdArgs.push_back("FortranDecimal.static.lib");
1000-
break;
1001-
case options::OPT__SLASH_MTd:
1002-
CmdArgs.push_back("/DEFAULTLIB:libcmtd");
1003-
CmdArgs.push_back("Fortran_main.static_dbg.lib");
1004-
CmdArgs.push_back("FortranRuntime.static_dbg.lib");
1005-
CmdArgs.push_back("FortranDecimal.static_dbg.lib");
1006-
break;
1007-
case options::OPT__SLASH_MD:
1008-
CmdArgs.push_back("/DEFAULTLIB:msvcrt");
1009-
CmdArgs.push_back("Fortran_main.dynamic.lib");
1010-
CmdArgs.push_back("FortranRuntime.dynamic.lib");
1011-
CmdArgs.push_back("FortranDecimal.dynamic.lib");
1012-
break;
1013-
case options::OPT__SLASH_MDd:
1014-
CmdArgs.push_back("/DEFAULTLIB:msvcrtd");
1015-
CmdArgs.push_back("Fortran_main.dynamic_dbg.lib");
1016-
CmdArgs.push_back("FortranRuntime.dynamic_dbg.lib");
1017-
CmdArgs.push_back("FortranDecimal.dynamic_dbg.lib");
1018-
break;
1019-
}
1020-
} else {
982+
// These are handled earlier on Windows by telling the frontend driver to add
983+
// the correct libraries to link against as dependents in the object file.
984+
if (!TC.getTriple().isKnownWindowsMSVCEnvironment()) {
1021985
CmdArgs.push_back("-lFortran_main");
1022986
CmdArgs.push_back("-lFortranRuntime");
1023987
CmdArgs.push_back("-lFortranDecimal");

‎clang/lib/Driver/ToolChains/CommonArgs.h‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -116,7 +116,7 @@ bool addOpenMPRuntime(llvm::opt::ArgStringList &CmdArgs, const ToolChain &TC,
116116
bool IsOffloadingHost = false, bool GompNeedsRT = false);
117117

118118
/// Adds Fortran runtime libraries to \p CmdArgs.
119-
void addFortranRuntimeLibs(const ToolChain &TC, const llvm::opt::ArgList &Args,
119+
void addFortranRuntimeLibs(const ToolChain &TC,
120120
llvm::opt::ArgStringList &CmdArgs);
121121

122122
/// Adds the path for the Fortran runtime libraries to \p CmdArgs.

‎clang/lib/Driver/ToolChains/Darwin.cpp‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -678,7 +678,7 @@ void darwin::Linker::ConstructJob(Compilation &C, const JobAction &JA,
678678
// to generate executables.
679679
if (getToolChain().getDriver().IsFlangMode()) {
680680
addFortranRuntimeLibraryPath(getToolChain(), Args, CmdArgs);
681-
addFortranRuntimeLibs(getToolChain(), Args, CmdArgs);
681+
addFortranRuntimeLibs(getToolChain(), CmdArgs);
682682
}
683683

684684
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs))

‎clang/lib/Driver/ToolChains/DragonFly.cpp‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -153,7 +153,7 @@ void dragonfly::Linker::ConstructJob(Compilation &C, const JobAction &JA,
153153
// AddRunTimeLibs).
154154
if (D.IsFlangMode()) {
155155
addFortranRuntimeLibraryPath(ToolChain, Args, CmdArgs);
156-
addFortranRuntimeLibs(ToolChain, Args, CmdArgs);
156+
addFortranRuntimeLibs(ToolChain, CmdArgs);
157157
CmdArgs.push_back("-lm");
158158
}
159159

‎clang/lib/Driver/ToolChains/Flang.cpp‎

Lines changed: 57 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -204,6 +204,59 @@ void Flang::AddAArch64TargetArgs(const ArgList &Args,
204204
}
205205
}
206206

207+
static void processVSRuntimeLibrary(const ToolChain &TC, const ArgList &Args,
208+
ArgStringList &CmdArgs) {
209+
assert(TC.getTriple().isKnownWindowsMSVCEnvironment() &&
210+
"can only add VS runtime library on Windows!");
211+
if (TC.getTriple().isKnownWindowsMSVCEnvironment()) {
212+
CmdArgs.push_back(Args.MakeArgString(
213+
"--dependent-lib=" + TC.getCompilerRTBasename(Args, "builtins")));
214+
}
215+
unsigned RTOptionID = options::OPT__SLASH_MT;
216+
if (auto *rtl = Args.getLastArg(options::OPT_fms_runtime_lib_EQ)) {
217+
RTOptionID = llvm::StringSwitch<unsigned>(rtl->getValue())
218+
.Case("static", options::OPT__SLASH_MT)
219+
.Case("static_dbg", options::OPT__SLASH_MTd)
220+
.Case("dll", options::OPT__SLASH_MD)
221+
.Case("dll_dbg", options::OPT__SLASH_MDd)
222+
.Default(options::OPT__SLASH_MT);
223+
}
224+
switch (RTOptionID) {
225+
case options::OPT__SLASH_MT:
226+
CmdArgs.push_back("-D_MT");
227+
CmdArgs.push_back("--dependent-lib=libcmt");
228+
CmdArgs.push_back("--dependent-lib=Fortran_main.static.lib");
229+
CmdArgs.push_back("--dependent-lib=FortranRuntime.static.lib");
230+
CmdArgs.push_back("--dependent-lib=FortranDecimal.static.lib");
231+
break;
232+
case options::OPT__SLASH_MTd:
233+
CmdArgs.push_back("-D_MT");
234+
CmdArgs.push_back("-D_DEBUG");
235+
CmdArgs.push_back("--dependent-lib=libcmtd");
236+
CmdArgs.push_back("--dependent-lib=Fortran_main.static_dbg.lib");
237+
CmdArgs.push_back("--dependent-lib=FortranRuntime.static_dbg.lib");
238+
CmdArgs.push_back("--dependent-lib=FortranDecimal.static_dbg.lib");
239+
break;
240+
case options::OPT__SLASH_MD:
241+
CmdArgs.push_back("-D_MT");
242+
CmdArgs.push_back("-D_DLL");
243+
CmdArgs.push_back("--dependent-lib=msvcrt");
244+
CmdArgs.push_back("--dependent-lib=Fortran_main.dynamic.lib");
245+
CmdArgs.push_back("--dependent-lib=FortranRuntime.dynamic.lib");
246+
CmdArgs.push_back("--dependent-lib=FortranDecimal.dynamic.lib");
247+
break;
248+
case options::OPT__SLASH_MDd:
249+
CmdArgs.push_back("-D_MT");
250+
CmdArgs.push_back("-D_DEBUG");
251+
CmdArgs.push_back("-D_DLL");
252+
CmdArgs.push_back("--dependent-lib=msvcrtd");
253+
CmdArgs.push_back("--dependent-lib=Fortran_main.dynamic_dbg.lib");
254+
CmdArgs.push_back("--dependent-lib=FortranRuntime.dynamic_dbg.lib");
255+
CmdArgs.push_back("--dependent-lib=FortranDecimal.dynamic_dbg.lib");
256+
break;
257+
}
258+
}
259+
207260
void Flang::addTargetOptions(const ArgList &Args,
208261
ArgStringList &CmdArgs) const {
209262
const ToolChain &TC = getToolChain();
@@ -267,6 +320,10 @@ void Flang::addTargetOptions(const ArgList &Args,
267320
}
268321
}
269322

323+
if (Triple.isKnownWindowsMSVCEnvironment()) {
324+
processVSRuntimeLibrary(TC, Args, CmdArgs);
325+
}
326+
270327
// TODO: Add target specific flags, ABI, mtune option etc.
271328
}
272329

‎clang/lib/Driver/ToolChains/FreeBSD.cpp‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -310,7 +310,7 @@ void freebsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
310310
// AddRunTimeLibs).
311311
if (D.IsFlangMode()) {
312312
addFortranRuntimeLibraryPath(ToolChain, Args, CmdArgs);
313-
addFortranRuntimeLibs(ToolChain, Args, CmdArgs);
313+
addFortranRuntimeLibs(ToolChain, CmdArgs);
314314
if (Profiling)
315315
CmdArgs.push_back("-lm_p");
316316
else

‎clang/lib/Driver/ToolChains/Gnu.cpp‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -564,7 +564,7 @@ void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
564564
// AddRunTimeLibs).
565565
if (D.IsFlangMode()) {
566566
addFortranRuntimeLibraryPath(ToolChain, Args, CmdArgs);
567-
addFortranRuntimeLibs(ToolChain, Args, CmdArgs);
567+
addFortranRuntimeLibs(ToolChain, CmdArgs);
568568
CmdArgs.push_back("-lm");
569569
}
570570

‎clang/lib/Driver/ToolChains/Haiku.cpp‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -118,7 +118,7 @@ void haiku::Linker::ConstructJob(Compilation &C, const JobAction &JA,
118118
// AddRunTimeLibs).
119119
if (D.IsFlangMode()) {
120120
addFortranRuntimeLibraryPath(ToolChain, Args, CmdArgs);
121-
addFortranRuntimeLibs(ToolChain, Args, CmdArgs);
121+
addFortranRuntimeLibs(ToolChain, CmdArgs);
122122
}
123123

124124
CmdArgs.push_back("-lgcc");

‎clang/lib/Driver/ToolChains/MSVC.cpp‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -131,7 +131,7 @@ void visualstudio::Linker::ConstructJob(Compilation &C, const JobAction &JA,
131131

132132
if (C.getDriver().IsFlangMode()) {
133133
addFortranRuntimeLibraryPath(TC, Args, CmdArgs);
134-
addFortranRuntimeLibs(TC, Args, CmdArgs);
134+
addFortranRuntimeLibs(TC, CmdArgs);
135135

136136
// Inform the MSVC linker that we're generating a console application, i.e.
137137
// one with `main` as the "user-defined" entry point. The `main` function is

‎clang/lib/Driver/ToolChains/MinGW.cpp‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -249,7 +249,7 @@ void tools::MinGW::Linker::ConstructJob(Compilation &C, const JobAction &JA,
249249

250250
if (C.getDriver().IsFlangMode()) {
251251
addFortranRuntimeLibraryPath(TC, Args, CmdArgs);
252-
addFortranRuntimeLibs(TC, Args, CmdArgs);
252+
addFortranRuntimeLibs(TC, CmdArgs);
253253
}
254254

255255
// TODO: Add profile stuff here

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